کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
182602 | 459434 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High rate capability of carbon nanofilaments with platelet structure as anode materials for lithium ion batteries High rate capability of carbon nanofilaments with platelet structure as anode materials for lithium ion batteries](/preview/png/182602.png)
Carbon nanofilaments (CNFs) with platelet structure have been prepared by liquid phase carbonization using porous anodic alumina template, and their lithium ion insertion/extraction properties have been examined as a function of heat treatment temperature and filament diameter. The CNFs heat-treated at 1000 °C reveal higher capacitance and higher rate capability compared with those heat-treated at higher temperatures. Further, it is found that higher reversible capacity is obtained for the CNFs with reduced diameter. The reversible capacity of highly graphitized CNFs formed at 2800 °C is less than 200 mA h g−1 at a current density of 50 mA g−1, being far lower than the theoretical capacity (372 mA h g−1) of graphite. A probable reason is the presence of loop at the edge of graphene layers.
Journal: Electrochemistry Communications - Volume 8, Issue 8, August 2006, Pages 1275–1279